Fatal error: Uncaught TypeError: SpecialOfferProduct::setId(): Argument #1 ($id) must be of type string, null given, called in /var/www/dentaurum-instanzen/php/SpecialOfferService.php on line 549 and defined in /var/www/dentaurum-instanzen/php/SpecialOfferProduct.php:311 Stack trace: #0 /var/www/dentaurum-instanzen/php/SpecialOfferService.php(549): SpecialOfferProduct->setId() #1 /var/www/dentaurum-instanzen/php/SpecialOfferService.php(520): SpecialOfferService->getProductDataObj() #2 /var/www/dentaurum-instanzen/php/SpecialOfferService.php(893): SpecialOfferService->loadCategoryDataByProducts() #3 /var/www/dentaurum-instanzen/php/SpecialOfferService.php(734): SpecialOfferService->getOffer() #4 /var/www/dentaurum-instanzen/php/BasketHandler.inc.php(1179): SpecialOfferService->calcBasketData() #5 /var/www/dentaurum-instanzen/php/BasketHandler.inc.php(1120): BasketHandler->calculateBasket() #6 /var/www/dentaurum-instanzen/php/BasketHandler.inc.php(1856): BasketHandler->initializeBasket() #7 /var/www/dentaurum-instanzen/php/Controller.inc.php(117): BasketHandler->getHtmlBasketMainMenu() #8 /var/www/dentaurum-instanzen/public/login.php(22): Controller::getMainContent() #9 {main} thrown in /var/www/dentaurum-instanzen/php/SpecialOfferProduct.php on line 311